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Broadband quasi-Chebyshev bandpass filters with multimode stepped-impedance resonators (SIRs)
2006
IEEE transactions on microwave theory and techniques
Planar broadband bandpass filters of order up to 9 are synthesized based on the multimode property of stepped-impedance resonators (SIRs). Based on the transmission line theory, the modal frequencies of the SIRs are calculated based on the impedance and length ratios of its hi-and lowsegments. In the synthesis, the SIR coupling schemes are determined by the split mode graphs. Using one, two, two, three, and three dual-or triple-mode SIRs, quasi-Chebyshev filters with four, six, six, eight, and
doi:10.1109/tmtt.2006.879131
fatcat:na5iirxvyrhyxp74ctltkcwaeq